What is Paresthesia? What Are Its Symptoms? How Is It Diagnosed and Treated?

Paresthesia refers to abnormal sensory sensations that occur as a result of disruptions in nerve conduction. Temporary paresthesia usually occurs due to short-term pressure on a nerve and resolves on its own. However, chronic paresthesia can develop due to chronic conditions such as diabetes or multiple sclerosis and may require medical treatment. In this article, we will discuss the symptoms, causes, diagnosis, and treatment methods of paresthesia in detail.

What is Paresthesia and What Are Its Symptoms?

Definition of Paresthesia

Paresthesia refers to abnormal sensory changes felt on the skin as a result of disruptions in nerve conduction. Derived from the Greek words "para" (abnormal) and "aisthesia" (sensation), this term is the general name for unusual sensations such as tingling, numbness, pins and needles, and burning.

Nerves branch out from the brain and spinal cord to tissues throughout the body, allowing the skin to perceive sensations such as touch, pain, and temperature. The area of skin for which a nerve is responsible for sensing is called a dermatome. Paresthesia occurs when a nerve has trouble perceiving sensations in its dermatome region or when there is a problem with the transmission of the perceived sensation to the central nervous system.

Paresthesia usually affects the hands, arms, legs, and feet, but it can occur anywhere in the body. As a temporary condition, it is seen as a result of excessive pressure on a nerve.

Symptoms of Paresthesia

Symptoms of paresthesia can vary from person to person. The most prominent sign is a sudden feeling of numbness and tingling. Various sensations occur on the skin in almost any region, especially more frequently in the extremities such as hands, arms, and feet.

The main symptoms seen in paresthesia are as follows:

Tingling and numbness sensation

Burning and stinging sensation

Pins and needles sensation

Itching on the skin

Feeling of cold

Loss of sensation in the affected area

Hypersensitivity to touch

Stabbing or uncomfortably burning sensations may also manifest. Some individuals experience increased loss of sensation at night. There may be a loss of touch, vibration, pain, or temperature sensations in the affected skin area.

People experiencing chronic paresthesia may have stabbing pains. This condition can result in difficulty walking and clumsiness in the affected feet or legs.

Types of Paresthesia (Temporary and Chronic)

Paresthesia is divided into two main groups depending on its duration and cause. Each has its own unique characteristics.

Temporary paresthesia occurs when pressure is applied to a nerve and symptoms disappear when the pressure is relieved. It can occur due to a lack of blood flow. Staying in the same position for a long time, crossing your legs, or sleeping on your arm restricts blood flow by putting pressure on the nerve, leading to temporary numbness. Dehydration, stress, and panic attacks are also among the causes of temporary paresthesia.

Chronic paresthesia is a condition where the pins and needles sensation does not go away and is persistent. It can be an indicator of nerve damage. It may be a sign of an underlying neurological disease or traumatic nerve damage. Persistent paresthesia can point to metabolic, infectious, or autoimmune diseases in addition to nervous system damage.

What Causes Paresthesia?

The answer to the question of what causes paresthesia is quite broad. Two types of nerve damage lead to paresthesia: radiculopathy and neuropathy.

Nerve Compression and Pressure

Radiculopathy is a condition where nerve roots are compressed, inflamed, or irritated. A herniated disc pressing on a nerve, a mass compressing a nerve exiting the spinal canal, or narrowing of the spinal canal causes radiculopathy.

When radiculopathy affects the lower back, it is known as lumbar radiculopathy and causes paresthesia in the leg and foot. Compression of the sciatic nerve can lead to leg weakness. On the other hand, when the nerves that provide sensation and strength to the arm are affected, it is called cervical radiculopathy. In cervical radiculopathy, recurrent neck pain, paresthesia in the upper extremities, and weakness in the arms are observed.

Exposing a specific body region to body weight for a long time or keeping nerve tissue under pressure due to a bony prominence causes disruption of sensory conduction in nerve tissues.

Peripheral Neuropathy

Peripheral neuropathy occurs when nerves outside the brain and spinal cord are damaged. Trauma, infections, exposure to toxins, or chronic diseases can cause this damage. Approximately 2.4% of people worldwide have some form of peripheral neuropathy. This rate varies between 5% and 7% in people aged 45 and over.

Diabetic Neuropathy

Diabetic neuropathy is nerve damage caused by diabetes. High blood sugar levels damage nerves over time. High blood sugar causes chemical differences in nerves, affecting their ability to transmit signals. It also leads to damage to the blood vessels that carry oxygen and nutrients to the nerves.

About half of people with diabetes may have some form of neuropathy. Sensory symmetric polyneuropathy is found in about 35% of diabetic patients. In addition to this, pain symptoms in the form of burning sensations may be accompanied by numbness, paresthesia, and autonomic dysfunction.

Vitamin Deficiencies (B12, B6)

Vitamin B12 deficiency causes nerve conduction problems or nerve damage. Tingling in the hands or feet is a common symptom of this deficiency. B12 deficiency occurs due to vegetarian or vegan diets, intestinal absorption problems, or aging.

Neuropathy can be seen in B6, B1, and E vitamin deficiencies. Neuropathy can be felt as numbness, tingling, or nerve pain.

Carpal Tunnel Syndrome

Carpal tunnel syndrome occurs when the median nerve in the wrist is under pressure. This syndrome is three times more common in women than in men. Numbness and tingling in the hands and fingers, and weakness, especially in the thumb and the first three fingers, are observed. Numbness and pain that increase at night negatively affect sleep quality.

Multiple Sclerosis and Neurological Diseases

Multiple sclerosis is a chronic disease that progresses with damage to the tissues protecting nerves in the central nervous system. Paresthesia is one of the most common findings in MS patients. Weakness in the extremities, sensory symptoms, bladder problems, and fatigue are common symptoms.

Additionally, infections such as stroke, brain tumors, Lyme disease, and shingles can also cause paresthesia.

How is Paresthesia Diagnosed?

In cases of chronic or recurrent paresthesia, a comprehensive evaluation is required to identify the underlying cause. An accurate diagnosis plays an important role in preparing an effective treatment plan.

Physical Examination and Patient History

The diagnostic process begins with taking a detailed history. Your doctor will ask what you feel, when the symptoms started, how long they last, and how they spread. It is important which parts of the body are affected, whether it is unilateral or bilateral, and whether it shows a glove or stocking distribution.

Conditions that trigger or worsen symptoms are identified. Certain movements or positions may be triggering factors. Accompanying symptoms such as pain, muscle weakness, loss of balance, and coordination disorders are questioned. Information about your previous illnesses, medications you use, and your eating habits should be provided.

During the physical examination, touch, pain, vibration, and temperature sensations in the affected area are evaluated. Muscle strength, muscle tone, and muscle wasting are checked. Deep tendon reflexes are measured by performing a reflex examination. Balance and coordination tests may be applied.

Nerve Conduction Tests (EMG)

EMG is a diagnostic test that measures how well muscles and nerve cells respond to electrical signals. It is used to determine the type, severity, and location of nerve damage.

The EMG procedure consists of two stages. In the first stage, electrodes are attached to the skin to determine the nerve conduction status. Electrical stimuli are given to the arms or legs, and the speed and thickness of the nerves are checked. The stimulus given is at a level that will not disturb the person.

In the second stage, the electrical activity of the muscles is examined with the help of a needle. A sterile needle is inserted into specific muscles to evaluate the state of the muscle at rest and in a contracted state. The test usually takes 30 to 60 minutes. After the test, mild pain or bruising may occur in the areas where the needle was inserted, but this passes within a few days.

Imaging Methods (MRI, CT)

Imaging methods such as MRI and CT reveal structural problems in the body that are not visible to the naked eye. They are used to detect problems in the brain, spinal cord, or nerve compression areas.

MRI provides detailed images of soft tissues using radio waves and strong magnetic fields. It is effective in evaluating soft tissues such as the brain, spinal cord, muscles, and nerves. It shows conditions such as multiple sclerosis lesions, tumors, and herniated discs.

CT, on the other hand, provides fast results using X-rays. It is preferred for the evaluation of bone structures and internal organs.

Blood Tests

Various blood tests may be requested depending on the underlying cause. Anemia is checked with a complete blood count. Blood sugar measurement is necessary for diabetes screening. Vitamin levels, especially vitamin B12, are checked. Thyroid function tests, kidney and liver function tests are performed. Autoimmune disease markers can be investigated.

How is Paresthesia Treated?

The treatment of paresthesia complaints is determined according to the condition causing the problem. Temporary paresthesia usually resolves on its own and does not require special treatment. However, medical intervention is essential in chronic paresthesia. The treatment plan is prepared for the underlying disease.

Drug Treatments

Specialist doctors provide medication support to alleviate paresthesia symptoms. Anticonvulsants are effective in nerve-related pain and ensure that nerve impulses are brought under control. Drug therapy is a commonly preferred method for eliminating paresthesia. When underlying diseases are treated with medication, paresthesia symptoms also disappear.

Physical Therapy and Rehabilitation

Physical therapy is important in strengthening the muscles surrounding the affected nerve. Under the guidance of a specialist physiotherapist, it is aimed for the muscles to gain flexibility and increase movement capacity. It is intended to repair tissues and eliminate nerve compression. A strong muscle structure relieves the compression of tissues and prevents the recurrence of nerve compression. Regularly applied exercises and manual therapies have a positive effect on mobility.

Vitamin Supplements

Deficiency of vitamins such as B12, B6, and folic acid causes disruptions in nerve conduction. Supplements used under doctor supervision correct these deficiencies. Vitamins and minerals taken in the right dose have an important place in protecting nerve health. Vitamin B12 supports nerve conduction by protecting nerve cells.

Surgical Interventions

In cases where all applied methods are ineffective, surgical treatment comes to the agenda. Surgery may be required to reduce the pressure on the compressed nerve. Nerve decompression surgery is preferred, especially in cases that do not respond to conservative treatments. Surgical options are determined based on the person's symptoms and causes.

Applications That Can Be Done at Home

Simple methods in daily life can reduce paresthesia symptoms:

Regular exercise: Activities such as walking, swimming, or yoga increase blood circulation and ensure the nourishment of nerve tissues

Changing position: Avoid staying in the same position for a long time and do frequent stretching exercises

Healthy nutrition: Foods containing B vitamin group, magnesium, and omega 3 strengthen the nervous system

Hot and cold compress: Hot compress reduces muscle tension, while cold compress reduces swelling

When is Paresthesia Dangerous?

In some cases, paresthesia is a sign of serious health problems that require emergency medical intervention. You should pay attention to the severity of the symptoms and accompanying findings.

Sudden Onset and Persistent Paresthesia

Paresthesia that appears suddenly and worsens rapidly should be seen as a critical warning signal. This situation may indicate serious underlying health problems and requires specialist intervention without delay.

When loss of sensation occurs and becomes continuous, serious deterioration may have occurred in the functions of the nerves. Such situations make professional intervention mandatory in terms of early detection of potential damage in the nervous system.

If paresthesia symptoms persist and affect your quality of life, it may be a sign of an underlying disease that requires treatment. Chronic paresthesia can be an indicator of nerve damage such as neuropathy or radiculopathy.

Paresthesia Accompanied by Muscle Weakness

Paresthesia that occurs with muscle weakness and balance problems indicates that the degree of nerve involvement is high. These symptoms signal damage in the central nervous system or peripheral nerves.

You should consult a doctor immediately in the following cases:

Loss of bladder or bowel control

Paralysis

Confusion

Weakness in limbs

Speech impairment

Especially if tingling felt on one side of the body is accompanied by symptoms such as difficulty speaking or smiling, crookedness in the mouth, and asymmetrical face, it may be a sign of a stroke. In this case, going to the emergency room is of vital importance.

Frequently Asked Questions

1. What is paresthesia and what are its symptoms?

Paresthesia refers to abnormal sensations felt in various parts of the body. Its most common symptoms appear as numbness, tingling, pins and needles, or a "numb" feeling. Sometimes a burning or electric shock sensation may also occur.

1. When can temporary paresthesia symptoms be worrying?

Temporary tingling (e.g., caused by sitting on your legs for a long time) is usually not worrying and passes in a short time with a change of position. However, paresthesia symptoms that recur frequently, last a long time, or occur without a specific trigger should be evaluated by a doctor.

1. What are the most common causes of paresthesia?

Paresthesia can be caused by various reasons: nerve compression (such as carpal tunnel syndrome), vitamin deficiencies (especially B12), diabetes, multiple sclerosis, thyroid problems, migraines, stroke, alcohol consumption, side effects of some medications, and anxiety disorders are among the most common causes.

1. In what situations should I seek emergency medical help?

You should seek emergency medical help if sudden severe numbness, muscle weakness, numbness on one side of the face, speech impairment, vision problems, or dizziness are accompanied. These symptoms may be a sign of a stroke or a serious neurological condition.

1. How can I manage my paresthesia symptoms at home?

For mild symptoms: changing position, gently massaging the affected area, balanced nutrition (especially foods rich in B vitamins), regular exercise, and developing correct posture habits can help. Stress management techniques can also be beneficial.

1. How is paresthesia diagnosed?

Your doctor will first take a detailed medical history and perform a physical examination. Various tests such as blood tests, electromyography (EMG), nerve conduction studies, MRI imaging, or lumbar puncture may be required for diagnosis. In some cases, you may be referred to a neurology specialist.

1. What happens if paresthesia is not treated?

Untreated paresthesia can lead to permanent nerve damage depending on the underlying cause. Paresthesia associated with chronic diseases such as diabetes, in particular, can cause increased sensory loss and decreased quality of life over time. Early diagnosis and treatment are very important for preventing permanent damage.

1. Do paresthesia symptoms heal completely?

The recovery process depends on the cause and severity of the paresthesia. Symptoms caused by simple nerve compression or vitamin deficiency can completely resolve with appropriate treatment. However, in chronic conditions such as diabetic neuropathy, although symptoms can be brought under control, they may not disappear completely. Early diagnosis and treatment increase the chance of full recovery.

This frequently asked questions section will be informative and helpful about paresthesia. The questions cover a wide range from the definition of symptoms to treatment options and provide answers to concerns that patients frequently encounter.

In Summary, Paresthesia

Paresthesia is a feeling of numbness and tingling usually seen in the hands and feet. Temporary paresthesia is caused by staying in the same position for a long time and passes when the position is changed. Chronic paresthesia can be caused by diabetes, vitamin deficiencies, or nervous system diseases and is continuous. Diagnosis requires patient history, physical examination, and sometimes tests. Treatment is determined according to the underlying cause and may include vitamin supplements, physical therapy, blood sugar control, or surgery. Healthy nutrition, regular movement, and correct posture reduce the risk of paresthesia.